Modular construction can also give an advantage in similar classes in the International Green Construction Code.
Environmentally friendly building process. The controlled environment of the mill allows for more accurate construction when allowing the extra materials to be recycled in-house. 
Low waste. With the same programs being continuously built, the producer has records of exactly what quantity of materials are necessary for a specified job. Together with the consistency, most builders can design systems that use common lengths of timber, wallboard, etc., cut things with maximum efficacy, or have the ability to order exceptional lengths in bulk. While squander from a site-built dwelling may typically fill several large dumpsters, construction of a modular dwelling generates much less waste. According to the UK group WRAPup to a 90% reduction in materials can be accomplished through using modular construction.
Indoor construction. Assembly is independent of weather, which can increase work efficiency and avoids damaged construction material.
Flexibility. An individual can add to a modular building, such as creating high rises. When the needs change, modular buildings may be disassembled and the modules relocated or refurbished to their next usage reducing the demand for raw materials and minimizing the total amount of energy expended to make a building to fit the new need. In essence, the whole building could be recycled in some instances.
Modular buildings have been argued to have advantages over conventional buildings, for many different reasons.
Ability to service remote locations. Particularly in countries where prospective markets may be located far from industrial facilities, such as Australia, there may be much higher costs to build a in-house property in a distant area or a place experiencing a construction boom like mining towns. Modular buildings are also beneficial in providing sanitary and medical facilities where time, space, and funds are an issue.
Quality. Mixing traditional construction methods, quality manufacturing and third party agencies who offer arbitrary inspections, testing, and certification services for quality control, commercial modular buildings are built in strict compliance with appropriate local, state, and national regulations and codes. On account of the need to transport modules to the final website, each module must be built to independently withstand travel and setup requirements. Thus the final module-to-module meeting of independently durable components can yield a last product that is stronger than site-built structures. They are air-tight, and as such provide exceptional thermal performance. They also offer exceptional damp and cold immunity when compared to timber and other materials, and are immune to both compression decreasing and cold bridging.  Modular units might also be designed to match in with outside aesthetics of any existing building and modular units once assembled can be almost indistinguishable from a site-built construction.
Improved Air Quality - Many of the indoor air quality problems identified in new construction result from elevated humidity levels from the framing materials. Since the modular construction is substantially completed in a factory-controlled setting using abrasive materials, the prospect of high levels of moisture being trapped inside the new construction is removed.
Speed of construction/faster return on investment. Modular construction permits for the construction and the site work to be completed concurrently. According to some substances, this can decrease the total completion schedule by as much as 50%. This also reduces labour, financing and oversight expenses. To save even more time and money, the majority of design and engineering disciplines are a part of the manufacturing procedure. During site-built structure, walls cannot be set until floors are in position, and ceilings and rafters can't be added until walls are erected. On the other hand, with modular structure, walls, flooring, ceilings, and rafters are all built at precisely the exact same time, and then brought together in the exact same factory to form a construction. This process can allow modular building times of half an traditional, stick-built structure.